Haha, that's definitely a common reaction when someone not familiar with the terminology of the cryptocurrency world hears jargon like "zaps" and "followed." These terms are commonly used on Nostr, a social media platform that enables users to exchange signed messages with each other through a network of relays.

On Nostr, users can send each other tips in the form of zaps, which are Bitcoin Lightning Network payments that are transmitted over the Lightning Network at lightning-fast speeds with almost no transaction fees. When someone follows you on Nostr, it simply means they have subscribed to your messages and updates.

So don't worry, your friend's confusion is understandable. But who knows, maybe one day these terms will become so mainstream that everyone will know what they mean!